one_factor: Replace two or more factor levels by the first one.

In bdemeshev/rims: Useful R functions for IMS Health company.

Description

Replace two or more factor levels by the first one.

Usage

one_factor(x, levels)

Arguments

x	the factor variable with misprints in level names
levels	the levels that should be replaced by one level, levels[1] is used as the replacement.

Details

In raw data the same level of a factor variable may be encoded with errors, i.e. misprints. In this case many levels may correspond actually to one true level. This function replaces all mentioned levels by the first one.

Value

correctly encoded x

Examples

x <- c("Male","Female","male","Mle","Female")
unite_factors(x,c("Male","male","Mle"))

bdemeshev/rims documentation built on May 12, 2019, 3:41 a.m.